William h



UNITED STATES PATENT OFFICE.

WILLIAM H. AKINS AND JOSEPH C. BURRITT, OF ITHACA, NEW YORK, ASSIGNORSTO WILLIAM H. AKINS. Y

CALENDAR CLOCK.

Speccaton forming part of Letters Patent No. 11,711, dated September 19,1854:; Reissued November 2, 1869, No. 3,694.

To all 'whom z' may concern.'

Be it known that we, WILLIAM H. AKINS and JOSEPH O. Bunnrr'r, of Ithaca,in the county of Tompkins and State of New York, have jointly invented anew and useful machine, a Perpetual Calendar and Chronological TimepieceAttachment; and we do hereby declare that the following is a' full,clear, and exact description of the construction and operation of thesame, reference being had to the annexed drawings, making a part of thisspecification, in which Figure 1, is a front view; Fig. 2, front view,with face removed; Fig. 3, back view, with back of case removed; Fig. 4,sectional view, showing plate N; Fig. 5, sectional view, showing side ofroller F; Fig. 6, sectional view, showing end of roller F, withmachinery for moving it; Fig. 7, side view of wheel L; Fig. 8, face viewof wheel L, showing the arrangement of teeth and spaces; Fig. 9, endview of roller G, and helixll?, and also end of roller H; Fig. 10, endview of roller G, and machinery for moving it.

A, the case; B, dial, showing on its outer edge a circle of gures, fromll to 31, inclusive, representing theV days of the month, and havingthereon three apertures, O, D and E; F, roller, shown through theaperture O, and having thereon the several days of the week. G, rollershown through the aperture D, having thereon the names of the severalmonths, and also various chronological data; H, roller, or combinationof rollers, with figures thereon, so arranged as to exhibit, by theaction of the rollers, the year, and also various chronological data; I,hand, or pointer, pointing out the proper day of the month, in thecircle, on the outer edge of the dial B; J, time dial, showing the hourof the day; K, wheel, connecting the calendar and time movement, andrevolving once in twenty-four hours; L, wheel, revolving once in eachmonth, having four rows of teeth, on its periphery, all beginning on aline across the edge of the wheel, parallel with its axisone row, havingthirty-one equal divisions, or teeth, and to be used in all the monthshaving thirty-one days; one row, having thirty teeth, or divisions,having the 31st tooth removed, to be used for all the months havingthirty days; one row, having twenty-nine teeth (having the 30th and 81stteeth removed) to be used only in the month of February, of leap year;one row, having thereon twenty-eight teeth (having the 29th, 30th and31st teeth removed) to be used in the month of February, in the first,second and third years after leap year; M, wheel, having 48 teeth, andis firmly attached to the side of plate N, with the corrugated edge, andrevolving once in 48 months, or four years, the corrugated edge of plateN, raising and lowering the arm O, in the rocking shaft P, so as to keepthe detent, or stop X, resting on the wheel L, by means of the slottedarm Q, on the row having 31 teeth, during the months of January, March,May, July, August, October and December, and on the row having 30 teethduring the months of April, June, September and November; and on the rowhaving 29 teeth, during the month of February of leap year; and on therow having 28 teeth, during the month of February in the first, secondand third years after leap year, the arm O, beingkept in close contactwith the corrugated edge of the plate N, by the spring R, as the platerevolves, the said plate moving forward one tooth at the beginning ofeach month.

S, S, S, S, S, are stands, supporting the wheels L and M, and therollers, F, G and H; T, stand, supporting the detent or stop X; U,spring, serving to draw the detent X, into place between the teeth ofthe wheel L, when allowed, by the helix V, so to be drawn; V, helix, orsnail, attached to the shaft of wheel K, connecting the attachment andtime movements, and revolving once in 24: hours. (Shown in Fig. W, W, W,bars, to which the time movement, and other fixtures, are attached. X,detent, or stop, with hinges so arranged', and so attached to stand T,as to permit both of a horizontal and perpendicular movement. Y, lever,attached to the upper bar, W, by a pin or hinge Z; 2, helix, or snail,on the shaft of wheel L; 3, helix, or snail, on the shaft of roller G,and revolving once in twelve months; 4., 5, e, 7, s, 9, 10, 11, 12 and13, springs, the uses of which are explained in the description ofoperation; 14, stand, to which the connecting wheel K, is attached,

at one end; 15, block, to which the stand S, supporting roller H, isattached, or made fast; 16, 17, 18, 19, 20 and 22, levers, or liftingrods, the uses of which are explained in the description of operation;21, 23, 24 and 56, detents, or stops, the uses of which are given in thedescription of operation; 25, 26

and 27, screws, supporting on their points one end of the rollers F, Gand l-, and by which the said rollers are made sufficiently tight toretain their places, until moved by the action of the machinery, whenrequired; 28 and 29, screws, supporting one end of the shafts of wheelL, and the wheel ifi, having the plate N, attached; 30, 31, 32 and 33,lifting rods; 34, arm, projecting from the side of lever 1G; 35, stud,projecting downward from the lever 16, and lying on the side of helix 2;36, spring; 37, 33, 39, 40 and 41, clicks, dropping between the teeth oftheir respective wheels; 42, spring; 43, stand, to which detent 23 isattached; 44, plate, running easily on the shaft of roller F and againstthe side of the wheel 45, having seven teeth, the click 41 beingattached by a pin to the arm of plate 44, the extreme end being bent soas to raise the detent 23 when the lifting rod 31 is raised by the helixV; 45, wheel, having seven teeth, and made fast to the end of roller F;46, wheel, having twelve teeth, and firmly aflixed to 'the end of rollerGr; 47, helix, aixed to roller G, on the opposite end to the one havingthe wheel 46 attached; 43, plate, running loosely on the shaft of rollerG, and against the side of wheel 46, the click 39 being attached by apin to the arm of plate 43, the extreme end being bent so as to raisethe detent 21 when lever 16 is raised by helix 2; 49, wheel, havingtwenty-four, or any number of teeth, corresponding with the number ofyears, to be exhibited, and aiiixed to the end of roller l-l; 50, plate,loosely inclosing shaft of roller H, and being kept close to the side ofwheel 49 by spring 11, the click 3S being attached to arm of plate 50,the extreme end of said arm being so bent as to raise the detent 24 whenlever 22 is raised by helix 47; 51, pin, to which the lower end ofspring U, is attached, for the purpose of drawing detent X into place;52, spring, for throwing click 33 into place; 53, plate, looselyinclosing shaft of wheel M, (and by means of a spring kept closethereto) the click 40 being so attached to the arm of said plate as todrop between the teeth of the said wh-eel M when raised thereon by arm34; 54, plate, loosely inclosing the shaft of wheel L, and being keptclose to said wheel by spring, gin, or other fastening, 1

to the arm of which is attached click 37; 55, arm, or pin, attached tolift-ing rod 30, unh der, and for the purpose of, lifting detentDescription of operation. Let wheel L, be in a position to show, by thehand l, the first day of the month: The detent X, resting against theline of teeth indicated for the first day of the month, and on the rowhaving thirtyone teeth, as shown in the sectional drawing, Fig. 8. rlheroller F, in a position to show Sunday. The roller G, in a position toshow January. The roller H, in a position to show 1854; and the wheel M,and attached plate N, in such a position that the arm 0, will lie on theway marked January, (second year after leap year,) Fig. 4). 'lhe wheel K(connecting the attachment and time movement) having the helix V, on itsshaft, `and revolving in the direction indicated by the arrow, once intwenty-four hours-raising the lever Y, the lifting rod 31, attached tolever Y, wont raise the plate 44 high enough for click 41, (movingroller F,) to drop over the next tooth above the one on which it stood,before being raisedthe bent end of the arm of plate 44, having raisedthe detent 23, a little above the teeth of t-he wheel 45, (Fig. 6,)-therod 30, running looselythrough the end of lever Y, and secured fromfalling out by a hook or nut, at the top, wont, at the same time, raiseplate 54, high enough for click 37, to pass over four teeth on wheelL-the arm or pin 55, on the side of rod 30, lifting the detent X, alittle above the teeth of wheel L, at twelve oclock at midnight, theclicks being carried into their places by weights or springs-the helixV, having moved forward enough to let the lever Y, drop, from its outerend-the springs 5 and 8, drawing down the clicks 41 and 37-turningroller F, and wheel L-the detente X and 23, being drawn between theteeth of their respective wheels, by the springs 42 and U, stoppingroller F and wheel L, after being moved one tooth, each, the roller F,will show, Monday, and the hand l, will show the second day of themonth. The same changes, in the exhibition of the days of the week, andthe days of the month, will be produced at every succeeding twelveoclock, at midnight.

As the wheel L, revolves, the helix 2, on its shaft, raises lever 16,which operates 'on roller G, and wheel M, in the same way, and by meansof similar machinery as lever Y, operates on roller F, and wheel L, onthe preceding operation; moving the roller Gr, from January to February,as wheel L, moves the hand l, to the first day of the succeeding month.At the same time, the wheel M, with plate N, attached, is moved forwardone forty-eighth of a revolution-raising the arm C, on the top of thenext ray of the plate N, (Fig. 4) -removing the detent X, resting on therow of teeth on wheel L, (Fig. 8) having 28 teeth, (it having stood onthe one having 31 teeth, during the preceding month of January-the monthof February having only 28) and the plate N, will turn one day forward,at the first day of each month, moving the detent X, backward andforward, on the face of the wheel L, by means of the rocking shaft l),and arms O and Q, so as toshow the right number of days in each month,for four years, in which 'llhe roller Gr, with helix 47, attached, beingmoved forward monthly, as in the preceding operation, wont,consequently, make one revolution in each year-the helix 47, raising theclick 38, by the intervening machinery, as shown in Fig. 9-the helixbeing so placed on roller G, as that the lever 22, will drop from theouter end of the helix, as the roller Gr, turns from December toJanuary, thus allowing the machinery to turn the roller H, so as to show1855, at the same moment the other changes are being made, every changebeing made at precisely twelve oclock at night.

The entire impulse to the movement of the whole, and every part, of theattachment, is derived from the accompanying time movement.

Vhat we claim as our invention and desire to secure by Letters Patent,is,

1. The arrangement of the four rows of teeth on wheel L, (as shown inFig. 8) in combination with the corrugated plate N, the detent X, andthe arm O, the rocking shaft P, and the slotted arm Q or the equivalentof said arms and rocking shaft, for the purposes set forth.

2. Raising the click 37, over 4, or more,

of the teeth of the wheel L, (when run down) on the rst day of themonth; thereby acquiring a retaining power, suicient to be used withshort months, thus moving the wheel L, carrying the hand I, 0n the dial,from the` 28th day vof February, past the 29th, 30th and 31st, divisionsof the wheel L, to the Fig. 1, or the rst day of March; those teeth,(the 29th, 30th and 31st) being removed, the detent X, stopping thewheel L, at the point marked 1, on Fig. 8, indicating the first day ofevery month-one tooth, only, being used except at the last day of ashort month, the rod 30, slipping through the end of the lever Y.

3. We also claim the combination of the helix V, the lever Y, liftingrod 30, the detent X, the pin 55; the click 37 the wheel L, and spring 7and for the purposes described that is, giving movement to the wheel L.The rollers F, Gr, and H, being moved by similar devices.

WILLIAM H. AKINS. JOSEPH C. BURRITT. Witnesses:

MARTIN AKINS, ZELIA AKINS.

[FIRST PRINTED 1913.]

